0 Old HSK word(s):
三缄其口* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

三 three
缄 seal, close / bind / letter
其 his, her, its, their / that
口 mouth / open end / entrance, gate
Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual